3 papers
math.NT2024
The finitude of tamely ramified pro- extensions of number fields with cyclic -class groups
Yoonjin Lee, Donghyeok Lim
Let be an odd prime and be a number field whose -class group is cyclic. Let be the maximal pro- extension of which is unramified outside a…
cs.IT2021
Characterization of -ary functions in terms of association schemes and its applications
Yansheng Wu, Jong Yoon Hyun, Yoonjin Lee
We obtain an explicit criterion for -ary functions to produce association schemes in terms of their Walsh spectrum. Employing this characterization, we explicitly find a correla…
cs.IT2021
Further improvement on index bounds
Yansheng Wu, Yoonjin Lee, Qiang Wang
In this paper we obtain further improvement of index bounds for character sums of polynomials over finite fields. We present some examples, which show that our new bound is an impr…